Pump



March 20, 1945.

J. C. {WOODFORD PUMP Filed April l5, 1944 2 Sheets-Sheet l March 20, 1945. J. c. WOODFORD 2,371,940

PUMP l v i File); Apri; 15, 1944 2 sheets-.sheet 2 [t0/faq.

Patented Mar. 20, -1A 945 2,371,94ofy f PUMP Joseph c. Woodford, spring, Lake, Mich., assignor to John Wood Manufacturing Company, Inc., Philadelphia, Pa., a corporation of Delaware Application vApril l5, 1944,` Serial No. 531.2155

6 Claims.

inventionA relates to improvement in pumps, and particularly to hand operated pumps of the direct acting reciprocatory piston type.

My improved pump is particularly adaptabl y for use in dispensing fluids from a container, such as a 55 gallon steel drum, etc., and my pump is adapted to be secured in removable screw threadfy ed connection in the standard screw threaded opening provided in such containers.

' One feature of my invention is thatthe axis of the pump cylinder, piston and piston rod, and operating pump handle are in a substantially horizontal plane and substantially at right angles to the axis of the inlet andA outlet of the pump. Such construction enables the user to operate the pump with an easy, natural, horizontal sidearm movement when the pump is installed in the top of a container, say, a 55 gallon steel drum. .A receptacle for the iluid being pumpedmay be supported on the top of the drum, with the opening of the receptacle in registry with the dispensing outlet of the pump.

Another feature of my inventionis that my improved pump construction may be economically manufactured Yand assembledbecauseof its peculiar construction and arrangement.

My invention includes thev various novel fea' tures of construction and arrangement hereinafter more definitely specified with reference to the aciili companying drawings.

Fig. I is a vertical sectional view,partly in elevation, of myimproved pump. Fig. I I is a right hand end elevation of the structureshown in Fig. I. Fig. III is a vertical rsectional view lof the structure shown in Fig. I, taken on the line III--III in Fig.I. f y

Referring to the drawings; the substantially hollow pump basecasting I, preferably unitary,

has at its lowermost end an enlarged portion 2 which is provided with the screw thread 3 which is adapted for engagement with the standard screw threaded opening provided in a steel drum y (not shown) of standard 55 gallon capacity.

The lower portion of said pump base casting I has the internal annular partition flange 5 provided with the screw threaded opening Githerethrough. The upper end of the fluid inlet pipel 1 is provided with the screw thread 9 and is in rigid screw threaded engagement with the screw threaded opening 6 formed in said partition flange 5. Said inlet pipe 1 depends from the baser casting I to the lower portion of a fluid rcontainer from which uid is dispensed by the pump. The upper end of said inlet pipe 'lA is provided with the valve seat I for the ball valve I I which controls the passage of uid from the inletl pipe 1 to the chamber I2. Said pump base casting I is provided with the vent hole I3, conveniently eX- tending through the side wall of the base casting I and below the partition flange 5.

(ci. '10s- 178) The flared annular discharge throat I of said chamber I2 is in continuous open communication with .the annular passageway `IIS formed between the outer cylindrical casing I1 and the piston cyl- 5 inder I8 which are in spaced relationship, as`

shown in Figs. I and IH.

s shown in Fig. I, the righthand end of the outer cylindrical casing I1 is provided with the screw thread 20 and is in rigid vscrew threaded opening I formed in said base casting I. The lefthand end yof said outer cylindrical casing I I is .providedwiththeend closure 22 which has anz annular iiange 23 which is pushtted into the f left hand end of the outer cylindrical casing l1. Said end closure 22 is maintained in rigid uid tightrelationship with said casing I'l by any well known means', such as soldering, brazing, or weldingx" f The right hand end of the pump cylinder I8 is provided with the screw thread 25 which is rigidly engaged with the screw threaded opening 26 formed in the reduced annular ange 21 vof said pump casting I. Said pump casting I'is provided ce. with the lboss 2s which has'the driued opening 29 therethrough forming a bearing for the pump piston rod 3l);` As shown in Fig. I, the left hand en'd of said piston rod is provided with the'reduced screw threaded portion 321forming the shoulder 33 for positioning the piston 35 on the end of the piston rod 30. Said-piston 35 is maintained in rigid position on the rod by means of the nut 36.v Said piston is providedvwith a series of port openings 31 therethrough and, conveniently, :is: provided with the piston ring 38 which forms a seal with the internal cylindrical surface of the pump cylinder I8. are normally closed by means of the imperforate valve disc dil-which is spring pressed againstvthe fur. piston '35 byme'ans of the compression spring 4I. Said spring 4I is maintained in position by means of;l the pin 42 which lextends through a drilled opening formed' in said piston rod 30.

As viewed in Fig. I, the right hand end of the 4,50pening 29, forming the bearing for the piston rod 3l),l is provided with a packing gland 45 and packing gland adjusting nut 46 which is in screw threaded engagement with the screw thread opening 41. The right hand end-of the piston rod 30 5f* is provided with the screwthread 48 which is in rigid engagement with the screw threaded opening- 49 formed in the pump handle 50. v

I- find it convenient to provide the handle 5I) which is pivotally mounted on the stud 54 fixed in the boss 55 of the pump casing I. When it is desired tolock the pump handle and piston rodv engagement with the internally screw threaded"y Said piston port openings 3I` assembly to prevent operation of the pump, the lock link 53 is moved counterclockwise from the position shown in Fig. I to a position in which the lock link opening 52is in registry with the opening 5I formed through the pump handle, and the hasp of a padlock may be readily inserted through the aligned openings 5I and 52 and the padlock locked, thus preventing move-v `the dispensing pipe 60 is conveniently bent to an angular position such as is shown in Fig. II, so that the fluid pumped may bereadily discharged through the open outlet: of the dispensing nozzle 63 into any desirable receptacle positioned beneath said nozzle 63.

Operation.

Assiuning that the pump is rigidly secured in the top of a steel drum by engagement of the screw thread 3 with the standard screw threaded opening provided in such a steel drum, the in` let pipe I will extend to the lower portion ofthe drum from which the iiuid is to be dispensed. Movement ofthe pump handle 50 to the right, as viewedr in Fig. I, will draw Iliquid from the drum-container upthrough'the inlet pipe I and cause the ball valve II to be moved off: its valve seat I0. Liquidwill'flow through the chamber I2, discharge throat I5, annular passageway I6 andinto the lefthand end of the pump cylinder I8 as thev pump piston 35 is moved to the right.

let pipe, and al piston and piston rod assembly in operating relation with a piston cylinder; the combination with an outer cylinder in spaced relation with said piston cylinder; of means closing the outer end of said outer cylinder; an open inlet passageway formed between the inner periphery of said outer cylinder and the outer periphery of said piston cylinder; an open cham- .ber passageway between said inlet valve and and a piston rod andV 'piston rod assembly in As the piston 35v ismoved'to the right through the pump'` cylinder I8, the pont openings 31 in the piston 35 remain closed because the disc III) is pressed against the piston 35 by means of the compression.. spring 4I. When` the piston 35 reaches the end of its stroke at the'right hand end of the pump cylinder I8 and the operator then moves the handle 50, piston rod 30 and piston tothe left, as viewed in Fig. I, the. ball' valve' I I will'be forced by uid pressure on to its valve seat Ill, thus preventing owof fluid back' through the inlet pipe 'I. Movement of 'the pistonto the left, as just described,` will place the fluid between the piston and ball valve II under such pressure as will cause the valve disc 40 to beopened against the eiective forces of its spring 4I, and the fluid underv pressure will pass through the piston port openings 3'I, around the open valve disc 40, through the chamber 56 and dispensing nozzle outlet pipe 60 and open outlet of the dispensing nozzle 63 into any'desirable receptacle positionedl beneath 'said nozzle 63.

It is obvious that various modications may be made in my invention without departing` operating relation with a piston cylinder; the

combination with an outer casing in spaced relation with said pist-on cylinder; of means closing the outer end of said outer casing; an open inlet passageway formed between the inner periphery of said outer casing and the outer vperiphery of said piston cylinder; an open chamb er passageway between said inlet valve and said vinlet passageway; whereby a. continuous open communicating passageway is aorded `between the inlet side of said piston cylinder and said inlet valve, and a main body casting independently supporting and carrying said inlet and outlet pipes and said piston cylinder and said outer cylinder, said cylinders being-supported at one end only from said body casting.

3. In a hand operated direct acting'reciprocatory piston pump, including an inlet pipe, inlet valve, and outlet pipe, a flow passageway from the discharge side of the pump to the outlet pipe and a piston and piston rod assembly in operating relation with a piston cylinder; the combinationwith an outer casing in Ycoaxial relation with saidpiston cylinder; of meansclosing the outer end of said outer casing; an open inlet passageway formed between the inner periphery of lsaidf'outer casing and the outer periphery of said piston cylinder; an open chamber passage- Way between said inlet valve and-saidv inlet passageway; whereby a continuous'open communieating passageway is afforded between the, inlet side of said piston cylinder and lsaid inlet valve; and a main body casting independently supporting and carrying said inlet and outlet pipes in a plane substantially at right'angles to said inlet andA outlet pipes.

'5. A pump as in claim 2; wherein said outer casing, piston cylinder` and piston assembly are supported'and carried by said mainbody casting in a plane substantially atright angles to said inlet and outlet pipes.

6. A pump as in claim 3, wherein said outer casing, piston cylinder and piston assembly are supported and' carriedby said main body casting in` a plane substantially 'at said 'inlet and outlet pipes.

` JOSEPH C. WOODFORLD.

right angles to i 

